#### Often asked: How Far Should A Ship Travel Before It Disappears Because Of The Curve Of The Earth?

Assuming no air refraction and a spherical Earth with a radius of 6,371 kilometres (3,959 miles), the following results are obtained: In the case of an observer standing on the ground with a height of 1.70 metres (5 ft 7 in), the horizon is approximately 4.7 kilometers away (2.9 mi).

Contents

- 1 How far does the curvature of the Earth allow you to see?
- 2 How far away can a ship be seen?
- 3 How far away is the horizon at the beach?
- 4 How far can you see at 35000 feet?
- 5 How far can a person see on a clear day?
- 6 What is the maximum distance you can see at sea level?
- 7 How far can the human eye see across the ocean?
- 8 How far can I see across the ocean?
- 9 What distance is the horizon?
- 10 How do you calculate the distance to the horizon?
- 11 Why do commercial airplanes fly at 35000 feet?
- 12 How far can the human eye see another person?
- 13 How long does it take a plane to reach 30000 feet?

## How far does the curvature of the Earth allow you to see?

According to visual daytime observations, the lowest altitude at which the curvature of the horizon can be noticed is at or slightly below 35,000 feet if the field of vision is wide (60 degrees) and the sky is almost clear.

## How far away can a ship be seen?

The refractive index of the atmosphere has an effect on the perception of sight. A person standing on the deck of a small ship with an eye height of 2 meters (7 feet) would have a visual range of 5 kilometers (approximately 3 statute miles), which would be appropriate.

## How far away is the horizon at the beach?

The maximum distance to the horizon that the human eye can see varies slightly depending on the height of the individual viewing the scene. The horizon is roughly 3.1 miles away as measured in miles.

## How far can you see at 35000 feet?

How far can you see while you’re flying at 35,000 feet? – Quora is a question and answer website. The distance between the Earth and the Andromeda galaxy is 2.5 million light years if you stare towards the galaxy on a clear, dark night and see its hazy glow. For example, if you are flying in an airplane at 35,000 feet, that is 10,668 meters (35, 000 feet divided by 3.28 feet per meter = 10,668 meters).

## How far can a person see on a clear day?

(Photo courtesy of the National Oceanic and Atmospheric Administration.) It’s possible to see for miles and miles and miles in the distance on a clear day. It turns out that the ancient adage is almost entirely correct. The horizon is a little more than 3 miles (5 kilometers) away for a person who is six feet (182.88 cm) tall, according to the International Standard Time (IST).

## What is the maximum distance you can see at sea level?

The curvature of the planet restricts the range of vision to 2.9 miles at sea level due to the curvature of the world. The square root of an individual’s altitude multiplied by 1.225 is the formula for finding how many miles he or she can see from a certain height.

## How far can the human eye see across the ocean?

It would be 4.7 kilometers away if measured at sea level. We can almost certainly improve our maximum line of sight if we incorporate another variable in addition to the curvature of the globe (which is practically constant), and if we raise the height of the observer.

## How far can I see across the ocean?

It all depends on how high you are above the water. Because to the curvature of the earth, standing on the seashore at a height of two metres, you can see only 5km or 3 miles in front of you.

## What distance is the horizon?

Another factor to consider is that the more away the observer’s eyes are from sea level, the further away they are from the horizon. For example, under typical air circumstances, the horizon is about 5 kilometres away for an observer who is 1.70 metres (5 ft 7 in) above sea level with his or her eyes level above sea level by 1.70 metres (5 ft 7 in) (3.1 mi).

## How do you calculate the distance to the horizon?

If you’re standing on the coast, you may also estimate the distance to the horizon by dividing your height in half, which is a simple method of estimation. In other words, if you are 5’6′′ (5.5 feet) tall, the distance between you and the horizon is just around 2.75 miles away!

## Why do commercial airplanes fly at 35000 feet?

Approximately 35,000 feet is the altitude at which a satisfactory balance between operational expenses and fuel efficiency can be reached, which is why commercial airplanes often fly at that level. It is also becoming increasingly difficult for oxygen to reach the cells, making it impossible for fuel engine systems to function properly.

## How far can the human eye see another person?

According to a recent study, the human eyesight limit is only 1.6 miles.

## How long does it take a plane to reach 30000 feet?

A typical jet passenger airliner climbs at a pace of 1,000 to 2,000 feet per minute, depending on the model. As a result, it will take 15 to 30 minutes to reach 30,000 feet if there is no air traffic delay. According to what others have said, there can be a variety of circumstances that influence this time, but the “optimal” and “average” response is between 15 and 30 minutes.